define(function  (require, exports, module) {

    function preview() {
        // 图片预览
        $(".file-path").on("change",function() {
            var srcs = getObjectURL(this.files[0]);   //获取路径
            $(this).siblings('.add-img').addClass('hide');  //this指的是input
            $(this).siblings(".back-pic").show();
            $(this).parent(".pictures-one").css("border","none");
            $(this).parent().next().children('.add-img').removeClass('hide');
            $(this).parent().next().children('.file-path').removeAttr('disabled');
            $(this).nextAll(".back-pic").attr("src",srcs);
        });
        $(".input-img-btn").change(function(){
            var objUrl = getObjectURL(this.files[0]) ;
            if (objUrl) {
                $("#img0").attr("src", objUrl);
            }
            $("#add-img-btn").addClass('hide');
            $("#logo-container").css("border","none");
        });
        // 轮播
        animate()
    }
    function animate(offset) {
        var list = document.getElementById('list');
        var prev = document.getElementById('prev');
        var next = document.getElementById('next');
        var newLeft = parseInt(list.style.left) + offset;
        animateImg(list,prev,next,newLeft)

    }
    function animateImg(list,prev,next,newLeft) {
        list.style.left = newLeft + 'px';
        if(newLeft<-304){
            list.style.left = -304 + 'px';
        }
        if(newLeft>0){
            list.style.left = 0;
        }
        prev.onclick = function() {
            animate(304);
        }
        next.onclick = function() {
            animate(-304);
        }
    }
    function getObjectURL(file) {
        var url = null;
        if (window.createObjectURL !== undefined) {
            url = window.createObjectURL(file)
        } else if (window.URL !== undefined) {
            url = window.URL.createObjectURL(file)
        } else if (window.webkitURL !== undefined) {
            url = window.webkitURL.createObjectURL(file)
        }
        return url
    };
    module.exports = preview();
    // exports.preview = preview;
})